WEBHOOK_REGISTRATION_OUTCOME_UNKNOWN
500api_errorThe registration may have committed without a confirmed result.
Cause
The write was issued but its result could not be read back, so the endpoint may already exist.
How to fix it
Retry with the SAME Idempotency-Key so the stored receipt is returned rather than a second endpoint created.
Example response
500 WEBHOOK_REGISTRATION_OUTCOME_UNKNOWN
JSON
{
"error_code": "WEBHOOK_REGISTRATION_OUTCOME_UNKNOWN",
"error_type": "api_error",
"error_message": "The registration may have committed without a confirmed result.",
"hint": "Retry with the SAME Idempotency-Key so the stored receipt is returned rather than a second endpoint created.",
"docs_url": "https://docs.billerapi.com/errors/WEBHOOK_REGISTRATION_OUTCOME_UNKNOWN",
"request_id": "d94f5e2a-8c3b-4f1e-9a7d-6b2c1e0f8a34"
}Related
- Error handling — the error envelope shape and how to parse it
- Error code reference — every stable error code
Canonical docs URL: https://docs.billerapi.com/errors/WEBHOOK_REGISTRATION_OUTCOME_UNKNOWN
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